| 累托石吸附分离水中金霉素(英文) |
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| 引用本文： | 吕国诚,吴丽梅,王晓龙,廖立兵,王小雨.累托石吸附分离水中金霉素(英文)[J].中国化学工程学报,2012,20(5):1003-1007. |
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| 作者姓名： | 吕国诚 吴丽梅 王晓龙 廖立兵 王小雨 |
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| 作者单位： | 1. School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China;2. School of Engineering and Technology, China University of Geosciences, Beijing 100083, China |
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| 基金项目： | Supported by the Fundamental Research Funds for the Central Universities (2011YXL056);the National Program of Control and Treatment of Water Pollution (2009ZX07424-002) |
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| 摘 要： | The removal of antibiotics from water by clay minerals has become the focus of research due to their strong adsorptive ability. In this study, adsorption of chlortetracycline (CTC) onto rectories was conducted and the effects of time, concentration, temperature and pH were investigated. Experimental results showed that adsorption equilibrium was reached in 8 h. Based on the Langmuir model, the maximum adsorption capacity of CTC on rectories was 177.7 mg·g 1 at room temperature. By the study on adsorption dynamics, it is found that the kinetic date fit the pseudo-second-order model well. The adsorption of CTC by rectories is endothermic and the free energy is in the range of 10 to 30 kJ·mol 1 . The pH value of solution has significant effects on adsorption and the optimal pH is at acidity (pH 2-6). At concentration of 2500 mg·L 1 , the intercalated CTC produces an interlayer space with a height of 1.38 nm, which is 1.12 nm in raw rectories, suggesting that the adsorption occurs between layers of rectories.
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| 关 键 词： | 累托石 吸附水 金霉素 Langmuir模型 最适pH值 最大吸附量 吸附动力学 CTC |
| 收稿时间： | 2012-07-04 |
Adsorption of Chlortetracycline from Water by Rectories |
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| Lü Guocheng,WU Limei,WANG Xiaolong,LIAO Libing,and WANG Xiaoyu.Adsorption of Chlortetracycline from Water by Rectories[J].Chinese Journal of Chemical Engineering,2012,20(5):1003-1007. |
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| Authors: | Lü Guocheng WU Limei WANG Xiaolong LIAO Libing and WANG Xiaoyu |
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| Affiliation: | 1. School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China;2. School of Engineering and Technology, China University of Geosciences, Beijing 100083, China |
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| Abstract: | The removal of antibiotics from water by clay minerals has become the focus of research due to their strong adsorptive ability. In this study, adsorption of chlortetracycline (CTC) onto rectories was conducted and the effects of time, concentration, temperature and pH were investigated. Experimental results showed that adsorption equilibrium was reached in 8 h. Based on the Langmuir model, the maximum adsorption capacity of CTC on rectories was 177.7 mg·g-1 at room temperature. By the study on adsorption dynamics, it is found that the kinetic date fit the pseudo-second-order model well. The adsorption of CTC by rectories is endothermic and the free energy is in the range of 10 to 30 kJ·mol-1. The pH value of solution has significant effects on adsorption and the optimal pH is at acidity (pH 2-6). At concentration of 2500 mg·L-1, the intercalated CTC produces an interlayer space with a height of 1.38 nm, which is 1.12 nm in raw rectories, suggesting that the adsorption occurs between layers of rectories. |
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